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Toygar B, Yabas Kiziloglu O, Toygar O, Hacimustafaoglu AM. Clinical outcomes of a new diffractive multifocal intraocular lens. Int J Ophthalmol 2017; 10:1844-1850. [PMID: 29259902 DOI: 10.18240/ijo.2017.12.09] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 09/04/2017] [Indexed: 11/23/2022] Open
Abstract
AIM To evaluate clinical outcomes after implantation of a new diffractive aspheric multifocal intraocular lens (IOL) with +3.00 addition power. METHODS This is a retrospective, consecutive case series of cataract patients who underwent bilateral implantation of the Optiflex MO/HF D012 (Moss Vision Inc. Ltd, London, UK) multifocal IOL. Patients followed for 6mo were included in the study. Data on distance, intermediate and near visual acuity, refractive error [manifest spherical equivalent (MSE)], contrast sensitivity, adverse events, subjective symptoms, spectacle independence and patient satisfaction [visual function questionnaire (VFQ)-25 questionnaire] were retrieved from electronic medical records and analyzed. RESULTS Forty eyes of 20 patients with a mean age of 66.7±8.5y (range: 53-82) were included in the study. Mean uncorrected distance, near and intermediate visual acuity remained stable through postoperative visits and was 0.19±0.19 logMAR, Jaeger 4 and Jaeger 3 respectively at the 6mo visit. At the end of postoperative 6mo, MSE was -0.14±0.42 diopters (D) and 98% of the eyes were within 1.00 D of target refraction. Postoperative low contrast (10%) visual acuity remained stable (P=0.54) through follow up visits with a mean of 0.35±0.17 logMAR at the 6mo visit. There were no reported adverse events. None of the patients reported subjective symptoms of halo or glare. Spectacle independence rate was 90%. Mean VFQ-25 questionnaire score was 93.5±6.12. CONCLUSION The Optiflex MO/HF-DO12 IOL was safely implanted and successfully restored distance, intermediate and near visual acuity without impairing contrast sensitivity. High levels of spectacle independence were achieved at all distances including intermediate distance.
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Affiliation(s)
- Baha Toygar
- Department of Ophthalmology, Faculty of Medicine, Bahcesehir University, Istanbul 34732, Turkey
| | - Ozge Yabas Kiziloglu
- Department of Ophthalmology, Faculty of Medicine, Bahcesehir University, Istanbul 34732, Turkey
| | - Okan Toygar
- Department of Ophthalmology, Faculty of Medicine, Bahcesehir University, Istanbul 34732, Turkey
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Xu Z, Cao D, Chen X, Wu S, Wang X, Wu Q. Comparison of clinical performance between trifocal and bifocal intraocular lenses: A meta-analysis. PLoS One 2017; 12:e0186522. [PMID: 29073156 PMCID: PMC5657996 DOI: 10.1371/journal.pone.0186522] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Accepted: 10/03/2017] [Indexed: 01/11/2023] Open
Abstract
PURPOSE To compare the clinical performance between trifocal and bifocal intraocular lenses in bilateral cataract and/or refractive lens exchange (RLE) surgery. METHODS A comprehensive literature search of PubMed, EMBASE, Cochrane Controlled Trials Register and Web of Science was performed through October 2016 to identify randomized, controlled trials (RCTs) and comparative cohort studies. The primary outcomes were uncorrected distance visual acuity (UDVA), uncorrected intermediate visual acuity (UIVA), uncorrected near visual acuity (UNVA), defocus curve, spectacle independence, patient satisfaction and contrast sensitivity. The secondary outcomes were residual sphere, spherical equivalent (SE), cylinder and complications. RESULTS Six RCTs and 2 cohort studies including 568 eyes (278 in the trifocal group and 290 in the bifocal group) were identified. There was a statically significant difference between the two groups in UDVA (WMD: -0.03, 95% CI: -0.05 to -0.01, P = 0.005), but the difference (0.03 log MAR) is not clinically significant. Intermediate visual acuity was better in the trifocal IOL group judging from UIVA and defocus curves. There was a statically significant difference between the two groups in residual cylinder (WMD: 0.11, 95% CI: 0.02 to 0.20, P = 0.02), and subgroup AT Lisa tri 839MP trifocal also showed significant better UNVA than bifocal IOLs (WMD: -0.13, 95% CI: -0.17 to -0.08, P<0.00001). However, no significant differences were observed in UNVA (WMD: -0.04, 95% CI: -0.11 to 0.02, P = 0.19), spectacle independence (WMD: 1.27, 95% CI: 0.89 to 18.15, P = 0.07), patient satisfaction (WMD: 4.01, 95% CI: 0.07 to 22.72, P = 0.87), residual sphere (WMD: -0.03, 95% CI: -0.18 to 0.13, P = 0.74), SE (WMD: 0.04, 95% CI: -0.09 to 0.16, P = 0.55) or complications (WMD: 2.08, 95% CI: 0.35 to 12.43, P = 0.42). CONCLUSIONS Trifocal IOL technology (especially AT Lisa trifocal 839M trifocal) had a clear advantage over bifocal IOLs in intermediate visual acuity, while both trifocal IOLs and bifocal IOLs showed excellent performance in distance visual acuity. AT Lisa trifocal 839M trifocal could provide better uncorrected near visual acuity than bifocal IOLs. However, more evidence is needed to compare their spectacle independence, higher satisfaction rate, and photic phenomena.
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Affiliation(s)
- Zequan Xu
- Department of Ophthalmology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Xuhui District, Shanghai, PR China
| | - Danmin Cao
- Aier School of Ophthalmology, Central South University, Tianxin District, Changsha, Hunan Province, PR China
| | - Xu Chen
- Department of Cataract and Glaucoma, Shanghai Aier Eye Hospital No. 1286, Shanghai, China, PR China
| | - Song Wu
- School of Integrated Traditional and Western Medicine, Anhui University of Chinese Medicine, No. 103, Hefei, Anhui, PR China
| | - Xin Wang
- School of Data Science, Fudan University, No. 220, Yangpu District, Shanghai, PR China
| | - Qiang Wu
- Department of Ophthalmology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Xuhui District, Shanghai, PR China
- * E-mail:
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Salerno LC, Tiveron MC, Alió JL. Multifocal intraocular lenses: Types, outcomes, complications and how to solve them. Taiwan J Ophthalmol 2017; 7:179-184. [PMID: 29296549 PMCID: PMC5747227 DOI: 10.4103/tjo.tjo_19_17] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 12/05/2016] [Indexed: 11/04/2022] Open
Abstract
The multifocal intraocular lenses (IOLs) available are often able to restore visual function and allow spectacle independence after their implantation with great levels of patient satisfaction. The factors associated with the postoperatory success include the careful selection of the patient, the knowledge about the IOLs' design, and their visual performance added to the proper surgical technique and management of possible complications as demonstrated by the evidence available.
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Affiliation(s)
| | | | - Jorge L. Alió
- Division of Ophthalmology, Miguel Hernández University, Alicante, Spain
- Vissum Instituto Oftalmologico de Alicante, Alicante, Spain
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104
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Tsaousis KT, Dermenoudi M, Tsinopoulos IT. Short-term visual outcome after unilateral implantation of a trifocal diffractive presbyopia-correcting intraocular lens. Clin Exp Optom 2017; 101:416-417. [PMID: 28889556 DOI: 10.1111/cxo.12591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 05/08/2017] [Accepted: 05/29/2017] [Indexed: 11/30/2022] Open
Affiliation(s)
- Konstantinos T Tsaousis
- 2nd Department of Ophthalmology, Aristotle University of Thessaloniki, Thessaloniki, Greece.,John A Moran Eye Center, University of Utah, Salt Lake City, Utah, USA
| | - Maria Dermenoudi
- 2nd Department of Ophthalmology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioannis T Tsinopoulos
- 2nd Department of Ophthalmology, Aristotle University of Thessaloniki, Thessaloniki, Greece
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105
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Multifocal intraocular lenses: An overview. Surv Ophthalmol 2017; 62:611-634. [DOI: 10.1016/j.survophthal.2017.03.005] [Citation(s) in RCA: 168] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 02/28/2017] [Accepted: 03/03/2017] [Indexed: 01/18/2023]
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Schallhorn SC, Schallhorn JM, Pelouskova M, Venter JA, Hettinger KA, Hannan SJ, Teenan D. Refractive lens exchange in younger and older presbyopes: comparison of complication rates, 3 months clinical and patient-reported outcomes. Clin Ophthalmol 2017; 11:1569-1581. [PMID: 28894356 PMCID: PMC5584899 DOI: 10.2147/opth.s143201] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Purpose To compare refractive and visual outcomes, patient satisfaction, and complication rates among different age categories of patients who underwent refractive lens exchange (RLE). Methods A stratified, simple random sample of patients matched on preoperative sphere and cylinder was selected for four age categories: 45–49 years (group A), 50–54 years (group B), 55–59 years (group C), and 60–65 years (group D). Each group contained 320 patients. All patients underwent RLE with a multifocal intraocular lens at least in one eye. Three months postoperative refractive/visual and patient-reported outcomes are presented. Results The percentage of patients that achieved binocular uncorrected distance visual acuity 20/20 or better was 91.6% (group A), 93.8% (group B), 91.6% (group C), 88.8% (group D), P=0.16. Binocularly, 80.0% of patients in group A, 84.7% in group B, 78.9% in group C, and 77.8% in group D achieved 20/30 or better uncorrected near visual acuity (P=0.13). The proportion of eyes within 0.50 D of emmetropia was 84.4% in group A, 86.8% in group B, 85.7% in group C, and 85.8% in group D (P=0.67). There was no statistically significant difference in postoperative satisfaction, visual phenomena, dry eye symptoms, distance or near vision activities. Apart from higher rate of iritis in the age group 50–55 years, there was no statistically significant difference in postoperative complication rates. Conclusion RLE can be safely performed in younger as well as older presbyopes. No significant difference was found in clinical or patient-reported outcomes.
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Affiliation(s)
- Steven C Schallhorn
- Department of Ophthalmology, University of California, San Francisco, CA, USA.,Roski Eye Institute, University of Southern California, Los Angeles, CA, USA.,Optical Express, Glasgow UK
| | - Julie M Schallhorn
- Department of Ophthalmology, University of California, San Francisco, CA, USA
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Liu YC, Wilkins M, Kim T, Malyugin B, Mehta JS. Cataracts. Lancet 2017; 390:600-612. [PMID: 28242111 DOI: 10.1016/s0140-6736(17)30544-5] [Citation(s) in RCA: 520] [Impact Index Per Article: 74.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/27/2016] [Accepted: 02/02/2017] [Indexed: 12/11/2022]
Abstract
An estimated 95 million people worldwide are affected by cataract. Cataract still remains the leading cause of blindness in middle-income and low-income countries. With the advancement of surgical technology and techniques, cataract surgery has evolved to small-incisional surgery with rapid visual recovery, good visual outcomes, and minimal complications in most patients. With the development of advanced technology in intraocular lenses, the combined treatment of cataract and astigmatism or presbyopia, or both, is possible. Paediatric cataracts have a different pathogenesis, surgical concerns, and postoperative clinical course from those of age-related cataracts, and the visual outcome is multifactorial and dependent on postoperative visual rehabilitation. New developments in cataract surgery will continue to improve the visual, anatomical, and patient-reported outcomes. Future work should focus on promoting the accessibility and quality of cataract surgery in developing countries.
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Affiliation(s)
- Yu-Chi Liu
- Cornea and Refractive Surgery Group, Singapore Eye Research Institute, Singapore; Department of Cornea and External Eye Disease, Singapore National Eye Centre, Singapore
| | - Mark Wilkins
- Department of Cornea and External Eye Disease, Moorfields Eye Hospital, London, UK
| | - Terry Kim
- Department of Cornea and External Disease, Department of Ophthalmology, Duke University, Durham, NC, USA
| | - Boris Malyugin
- Department of Cataract and Implant Surgery, S Fyodorov Eye Microsurgery State Institution, Moscow, Russia
| | - Jodhbir S Mehta
- Cornea and Refractive Surgery Group, Singapore Eye Research Institute, Singapore; Department of Cornea and External Eye Disease, Singapore National Eye Centre, Singapore; Department of Clinical Sciences, Duke-NUS Medical School, Singapore.
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108
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Kelava L, Barić H, Bušić M, Čima I, Trkulja V. Monovision Versus Multifocality for Presbyopia: Systematic Review and Meta-Analysis of Randomized Controlled Trials. Adv Ther 2017; 34:1815-1839. [PMID: 28674958 DOI: 10.1007/s12325-017-0579-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Refractive surgery in presbyopia tends to achieve spectacle independence with minimal optical disturbances. We compared monovision to multifocality procedures regarding these outcomes. METHODS We conducted a systematic review of published (till November 21, 2016) randomized controlled trials (RCTs) comparing any monovision to any multifocality method or comparing different monovision/multifocality methods to each other that enabled direct or indirect comparisons between particular monovision and particular multifocality procedures in presbyopic patients undergoing cataract-related or unrelated surgery in respect to spectacle independence, unaided binocular visual acuity (VA), contrast sensitivity (CS), and adverse events. RESULTS Three trials comparing monovision (monofocal lenses, LASIK) to multifocal intraocular lenses (MFIOLs; Isert refractive or Tecnis diffractive) and 6 comparing other MFIOLs to Tecnis were included (1-12 months duration). Spectacle independence. All reporting trials were of sufficient quality. Directly, pseudophakic monovision was inferior to Isert (1 trial, N = 75, RR = 0.49, 95% CI 0.28-0.80) and Tecnis (1 trial, N = 211, RR = 0.36, 95% CI 0.25-0.52) in cataract patients, and LASIK was comparable to Tecnis (1 trial, N = 100, RR = 0.93, 0.78-1.10) in refractive surgery. In network meta-regression (6 trials, 14 arms) pseudophakic monovision in cataract patients was inferior to Tecnis. Indirect data suggest also that it is inferior (ReZoom refractive, TwinSet diffractive) or tends to be inferior (Array refractive) to other MFIOLs. LASIK was comparable to Tecnis in refractive surgery. Indirect data suggest also that it tends to superiority vs. ReZoom or Array refractive MFIOLs. Adverse events. No pooling was possible (heterogeneity of assessment and reporting). One quality direct RCT indicated less glare/dazzle with pseudophakic monovision vs. Tecnis in cataract patients. Unaided VA and CS data were burdened with heterogeneity (assessment, reporting) and insufficient quality. CONCLUSIONS Randomized comparisons of monovision to multifocality are scarce. Existing estimates regarding spectacle independence (imprecision, indirectness) and particularly regarding unaided VA and CS (assessment/reporting heterogeneity, bias, imprecision, indirectness) are burdened with uncertainty. Dysphotopsia is less common with monovision, but estimate uncertainty is high (bias, imprecision).
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109
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Vrijman V, van der Linden JW, van der Meulen IJ, Mourits MP, Lapid-Gortzak R. Multifocal intraocular lens implantation after previous corneal refractive laser surgery for myopia. J Cataract Refract Surg 2017; 43:909-914. [DOI: 10.1016/j.jcrs.2017.06.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 03/12/2017] [Accepted: 04/07/2017] [Indexed: 10/19/2022]
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Breyer DRH, Kaymak H, Ax T, Kretz FTA, Auffarth GU, Hagen PR. Multifocal Intraocular Lenses and Extended Depth of Focus Intraocular Lenses. Asia Pac J Ophthalmol (Phila) 2017; 6:339-349. [PMID: 28780781 DOI: 10.22608/apo.2017186] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 07/26/2017] [Indexed: 12/18/2022] Open
Abstract
Presbyopia and cataract patients' desire for increased spectacle independence after surgery is one of the main drivers for the development of multifocal intraocular lenses (MIOLs) and extended depth of focus (EDOF) intraocular lenses (IOLs). As education, biometry, diagnostics, surgical techniques, and MIOL/EDOF IOL designs have improved over the past decade, an increasing number of cataract surgeons have become cataract-refractive surgeons to help address this need. There is not 1 single MIOL/EDOF IOL, however, that suits all patients' needs. The wide variety of MIOLs and EDOF IOLs, their optics, and their respective impact on our patients' quality of vision have to be fully understood to choose the appropriate IOL for each individual; MIOL/EDOF IOL surgery has to be customized. This review article looks at the different optical aspects and clinical consequences of MIOLs/EDOF IOLs to help surgeons find an appropriate solution for each of their individual patients.
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Affiliation(s)
| | - Hakan Kaymak
- Breyer, Kaymak, Klabe Augenchirurgie, Düsseldorf, Germany
| | - Timon Ax
- Breyer, Kaymak, Klabe Augenchirurgie, Düsseldorf, Germany
| | | | | | - Philipp R Hagen
- Internationale Innovative Ophthalmochirurgie GbR, Düsseldorf, Germany
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Bilbao-Calabuig R, Llovet-Rausell A, Ortega-Usobiaga J, Martínez-del-Pozo M, Mayordomo-Cerdá F, Segura-Albentosa C, Baviera J, Llovet-Osuna F. Visual Outcomes Following Bilateral lmplantation of Two Diffractive Trifocal Intraocular Lenses in 10 084 Eyes. Am J Ophthalmol 2017; 179:55-66. [PMID: 28456547 DOI: 10.1016/j.ajo.2017.04.013] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 04/18/2017] [Accepted: 04/19/2017] [Indexed: 11/24/2022]
Abstract
PURPOSE To investigate refractive and visual acuity outcomes, patient satisfaction, and spectacle independence at 3 months of 2 diffractive (non-toric) trifocal intraocular lenses (IOLs) in a large series of patients. DESIGN Multicenter, retrospective, nonrandomized clinical study. METHODS Patients underwent lens phacoemulsification and were implanted bilaterally with a diffractive trifocal IOL: FineVision Micro F (PhysIOL SA, Liège, Belgium) or AT Lisa tri 839MP (Carl Zeiss AG, Jena, Germany). Surgeries were performed between 2011 and 2015 with at least 3 months of follow-up. Visual and refractive performance, patient satisfaction, and spectacle independence were evaluated. RESULTS A total of 10 084 trifocal IOLs were bilaterally implanted (5802 FineVision in 2901 patients and 4282 AT Lisa in 2141 patients). Three-month mean (± standard deviation) acuity: AT Lisa, binocular uncorrected distance visual acuity (UDVA), -0.01 logMAR ± 0.06; monocular distance corrected visual acuity (CDVA), 0.02 logMAR ± 0.06; binocular uncorrected near visual acuity (UNVA) at 40 cm, 0.05 logMAR ± 0.08; binocular uncorrected intermediate visual acuity (UIVA) at 80 cm, -0.05 logMAR ± 0.14; postoperative spherical equivalent, 0.26 D ± 0.47; cylinder -0.34 D ± 0.38; FineVision Micro F, binocular UDVA, 0.01 logMAR ± 0.05; monocular CDVA, 0.03 logMAR ± 0.06; binocular UNVA, 0.05 logMAR ± 0.08; binocular UIVA, -0.05 logMAR ± 0.12; spherical equivalent, 0.34 D ± 0.50; cylinder -0.39 D ± 0.40. The IOLs were equivalent in achieving spectacle independence; 98% were "satisfied" to "very satisfied" with their IOL performance. CONCLUSIONS In this retrospective study with over 5000 patients, implantation of both trifocal IOL models provided good functional distance, intermediate, and near visual acuity, resulting in high levels of both spectacle independence and patient satisfaction.
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Abstract
PURPOSE Report on the safety, efficiency and refractive outcomes of LASIK surgery in patients aged 65 or older. METHODS This study includes a case series of patients ≥65 years that underwent corneal refractive surgery during the period June 2010 to June 2015 at Hospital Zambrano Hellion, Monterrey, Mexico. Inclusion criteria were normal topography, central corneal thickness >500 μm, preoperative manifest refraction spherical equivalent (MRSE) up to -8.5 D and +6.0 D, cylinder up to -6.0 D, CDVA of 20/25 or better and with no other ocular pathology. RESULTS A total of 44 eyes (24 patients) were included. Mean age was 67.2 ± 2.1 years (range 65-80), with mean follow-up of 12.2 ± 1.3 months. Conventional LASIK was performed in 20 patients (group 1, 36 eyes) to improve UDVA (10 eyes myopic LASIK and 26 eyes hyperopic LASIK) and presbyopic LASIK (monovision) in 4 patients (group 2, 8 eyes) to restore near-vision performance. Preoperative MRSE group 1 was myopic: -2.79 ± 1.88 D; hyperopic +2.19 ± 1.88 D; and +2.10 ± 0.87 D in group 2. Preoperative UDVA in group 1 was 0.67 ± 0.30 LogMAR; 0.46 ± 0.18 LogMAR; and Jaeger ≥4 in 90% in group 2. Postoperative MRSE: -0.29 ± 0.86 D (myopic LASIK) (p < 0.001), +0.34 ± 0.62 D (hyperopic LASIK) (p < 0.001) and -1.25 ± 0.59 D (non-dominant eye) in presbyopic LASIK. Postoperative UDVA in myopic LASIK was 0.15 ± 0.30 (p = 0.001) and 0.11 ± 0.11 (p < 0.001) for hyperopic LASIK. In group 2, binocular UDVA was 0.16 ± 0.17 (p = 0.12) and UNVA was ≥J2 in 100% of the patients. CONCLUSION Even though elder patients may present greater LASIK restrictions due to lens and other ocular age-related changes, patients ≥65 years that were candidates for conventional and presbyopic LASIK showed satisfactory and safe refractive and visual outcomes.
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Visual outcomes and patient satisfaction 3 and 12 months after implantation of a refractive rotationally asymmetric multifocal intraocular lens. J Cataract Refract Surg 2017; 43:633-638. [PMID: 28602324 DOI: 10.1016/j.jcrs.2017.01.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 12/13/2016] [Accepted: 01/23/2017] [Indexed: 11/24/2022]
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114
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Fernandez EJ, Artal P. Achromatic doublet intraocular lens for full aberration correction. BIOMEDICAL OPTICS EXPRESS 2017; 8:2396-2404. [PMID: 28663881 PMCID: PMC5480488 DOI: 10.1364/boe.8.002396] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 03/31/2017] [Accepted: 04/02/2017] [Indexed: 05/22/2023]
Abstract
A doublet intraocular lens optimized for both chromatic and monochromatic aberration correction in pseudophakic eyes is presented. Ray-tracing techniques were applied to design the lens in white light within a chromatic eye model. Combinations of two materials, already commonly used in intraocular lenses, as acrylic and silicone, were used. Iterative optimization algorithms were employed to correct for longitudinal chromatic aberration, spherical aberration and off-axis aberrations within 10 degrees of visual field. The performance of this lens was compared with a standard single-material aspheric intraocular lens. Near full aberration correction was achieved with the doublet intraocular lens. The modulation transfer function and Strehl ratio were superior for the doublet lens. Through-focus calculations were also conducted showing better optical quality for the doublet. Real higher-order aberrations from normal eyes were incorporated in the model to evaluate the effect on the doublet intraocular lens performance. Results showed that the doublet lens preserved its benefits under realistic conditions. This doublet intraocular lens should provide patients with a better quality of vision after it is further developed in terms of manufacturing and surgical limitations.
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Rosa AM, Miranda ÂC, Patrício M, McAlinden C, Silva FL, Murta JN, Castelo-Branco M. Functional Magnetic Resonance Imaging to Assess the Neurobehavioral Impact of Dysphotopsia with Multifocal Intraocular Lenses. Ophthalmology 2017; 124:1280-1289. [PMID: 28433446 DOI: 10.1016/j.ophtha.2017.03.033] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/05/2017] [Accepted: 03/13/2017] [Indexed: 11/25/2022] Open
Abstract
PURPOSE To investigate the association between dysphotopsia and neural responses in visual and higher-level cortical regions in patients who recently received multifocal intraocular lens (IOL) implants. DESIGN Cross-sectional study. PARTICIPANTS Thirty patients 3 to 4 weeks after bilateral cataract surgery with diffractive IOL implantation and 15 age- and gender-matched control subjects. METHODS Functional magnetic resonance imaging (fMRI) was performed when participants viewed low-contrast grating stimuli. A light source surrounded the stimuli in half of the runs to induce disability glare. Visual acuity, wavefront analysis, Quality of Vision (QoV) questionnaire, and psychophysical assessment were performed. MAIN OUTCOME MEASURES Cortical activity (blood oxygen level dependent [BOLD] signal) in the primary visual cortex and in higher-level brain areas, including the attention network. RESULTS When viewing low-contrast stimuli under glare, patients showed significant activation of the effort-related attention network in the early postoperative period, involving the frontal, middle frontal, parietal frontal, and postcentral gyrus (multisubject random-effects general linear model (GLM), P < 0.03). In contrast, controls showed only relative deactivation (due to lower visibility) of visual areas (occipital lobe and middle occipital gyrus, P < 0.03). Patients also had relatively stronger recruitment of cortical areas involved in learning (anterior cingulate gyrus), task planning, and solving (caudate body). Patients reporting greater symptoms induced by dysphotic symptoms showed significantly increased activity in several regions in frontoparietal circuits, as well as cingulate gyrus and caudate nucleus (q < 0.05). We found no correlation between QoV questionnaire scores and optical properties (total and higher order aberration, modulation transfer function, and Strehl ratio). CONCLUSIONS This study shows the association between patient-reported subjective difficulties and fMRI outcomes, independent of optical parameters and psychophysical performance. The increased activity of cortical areas dedicated to attention (frontoparietal circuits), to learning and cognitive control (cingulate), and to task goals (caudate) likely represents the beginning of the neuroadaptation process to multifocal IOLs.
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Affiliation(s)
- Andreia M Rosa
- Faculty of Medicine of the University of Coimbra, Coimbra, Portugal; Ophthalmology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Ângela C Miranda
- Institute for Biomedical Imaging in Life Sciences, Faculty of Medicine of the University of Coimbra, Coimbra, Portugal
| | - Miguel Patrício
- Laboratory of Biostatistics and Medical Informatics, Institute for Biomedical Imaging in Life Sciences, Faculty of Medicine of the University of Coimbra, Coimbra, Portugal
| | - Colm McAlinden
- University Hospitals Bristol, NHS Foundation Trust, Bristol, United Kingdom; ABM University Health Board, Swansea, United Kingdom; Wenzhou Medical University, Wenzhou, Zhejiang, China; Flinders University, Adelaide, South Australia, Australia
| | - Fátima L Silva
- Institute for Biomedical Imaging in Life Sciences, Faculty of Medicine of the University of Coimbra, Coimbra, Portugal
| | - Joaquim N Murta
- Faculty of Medicine of the University of Coimbra, Coimbra, Portugal; Ophthalmology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.
| | - Miguel Castelo-Branco
- Institute for Biomedical Imaging in Life Sciences, Faculty of Medicine of the University of Coimbra, Coimbra, Portugal; Brain Imaging Network, Coimbra, Portugal
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Havnaer AG, Greenberg PB, Cockerham GC, Clark MA, Chomsky A. Cataract surgery practices in the United States Veterans Health Administration. J Cataract Refract Surg 2017; 43:543-551. [DOI: 10.1016/j.jcrs.2017.01.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 01/17/2017] [Accepted: 01/17/2017] [Indexed: 10/19/2022]
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117
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Srinivasan B, Leung HY, Cao H, Liu S, Chen L, Fan AH. Modern Phacoemulsification and Intraocular Lens Implantation (Refractive Lens Exchange) Is Safe and Effective in Treating High Myopia. Asia Pac J Ophthalmol (Phila) 2017; 5:438-444. [PMID: 27898449 DOI: 10.1097/apo.0000000000000241] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Improved efficacy, predictability, and safety of modern phacoemulsification have resulted in cataract surgery being considered as a refractive procedure. Refractive lens exchange by definition is a surgery aimed at replacing the cataractous or clear crystalline lens with an intraocular lens (IOL) in cases of high ametropia. The excellent intraocular optics of this procedure provide a better visual outcome as compared with laser refractive surgery in high myopia. With advances in technology and IOL formulas, the predictability of refractive outcome after cataract surgery in high myopes has improved. The option of addressing presbyopia using multifocal/accommodating IOLs or monovision results in patients achieving reasonable spectacle independence. The most important concern with respect to phacoemulsification in high myopia is the risk of pseudophakic retinal detachment. High myopia is an independent risk factor for retinal detachment, and recent publications have reported a much lesser risk of retinal detachment specifically attributable to phacoemulsification in high myopes, especially if a thorough posterior segment evaluation is done and patients are followed up until development of complete posterior vitreous detachment. Refractive lens exchange is an effective and safe option to correct high myopia and can significantly improve quality of life in select patients.
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Affiliation(s)
- Bhaskar Srinivasan
- From the *C-MER (Shenzhen) Dennis Lam Eye Hospital, Shenzhen, China; †Sankara Nethralaya, Chennai, India; and ‡Dennis Lam & Partners Eye Center, Hong Kong
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Greenstein S, Pineda R. The Quest for Spectacle Independence: A Comparison of Multifocal Intraocular Lens Implants and Pseudophakic Monovision for Patients with Presbyopia. Semin Ophthalmol 2016; 32:111-115. [DOI: 10.1080/08820538.2016.1228400] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Multifocal Corneal Ablation (Supracor) in Hyperopic Presbyopia: 1-Year Results in a Cross-Sectional Study. Eur J Ophthalmol 2016; 27:438-442. [DOI: 10.5301/ejo.5000871] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/13/2016] [Indexed: 11/20/2022]
Abstract
Purpose To evaluate the efficacy and safety of the multifocal excimer laser corneal ablation profile (the Supracor procedure) in hyperopic presbyopia 1 year after laser treatment. Methods This prospective, consecutive, one-center, cross-sectional study included 20 patients with hyperopic presbyopia 1 year after treatment with the Supracor procedure. The main outcome measures were monocular uncorrected distance visual acuity (UDVA) and uncorrected near visual acuity (UNVA), photopic contrast sensitivity (Pelli-Robson charts), patient satisfaction, and functioning at 12 months. Results Thirty-nine eyes of 20 patients (mean age 59 ± 7.2 years) were treated. Mean UDVA improved from 0.56 ± 0.31 (mean 0.34 logMAR) preoperatively to 0.9 ± 0.15 (mean 0.06 logMAR) 12 months after surgery. Mean UNVA increased from 0.15 ± 0.07 (mean 0.84 logMAR) before surgery to 0.62 ± 0.24 (mean 0.23 logMAR) 12 months after treatment. Four eyes lost 2 lines of corrected distance visual acuity (10.3%). Monocular photopic contrast sensitivity was within age-correlated normal range (Pelli-Robson chart, mean contrast sensitivity 1.83 ± 0.18). A total of 75% of the patients would undergo Supracor again (1 not, 4 perhaps). The most frequently reported side effects were increased glare, reduced distance vision, and fluctuations in vision. Most patients used artificial tears. Conclusions One year after Supracor, UDVA and UNVA improved markedly, photopic contrast sensitivity was in normal age-correlated range, and the majority of patients (75%) was satisfied with the results. Side effects like loss of distance vision, fluctuations of vision, and increased glare have a greater influence on patient satisfaction than the improvement of spectacle-free near vision.
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Gonzalez-Salinas R, Guarnieri A, Guirao Navarro MC, Saenz-de-Viteri M. Patient considerations in cataract surgery - the role of combined therapy using phenylephrine and ketorolac. Patient Prefer Adherence 2016; 10:1795-1801. [PMID: 27695298 PMCID: PMC5029911 DOI: 10.2147/ppa.s90468] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Cataract, a degradation of the optical quality of the crystalline lens, progressive and age-related, is the leading cause of treatable blindness worldwide. Cataract surgery is the most common surgical procedure performed by ophthalmologists and is the only effective treatment for cataracts. Advances in the surgical techniques and better postoperative visual outcomes have progressively changed the primary concern of cataract surgery to become a procedure refined to yield the best possible refractive results. Sufficient mydriasis during cataract removal is critical to a successful surgical outcome. Poor pupil dilation can lead to serious sight-threatening complications that significantly increase the cost of surgery and decrease patients comfort. Mydriasis is obtained using anticholinergic and sympathomimetic drugs. Phenylephrine, an α1-adrenergic receptor agonist, can efficiently dilate the pupil when administered by intracameral injection. Additionally, nonsteroidal anti-inflammatory drugs (NSAIDs) like ketorolac, which inhibit the synthesis of prostaglandins, are used to decrease intraoperative miosis, control pain and inflammation associated with cataract surgery, and to prevent the development of cystoid macular edema following surgery. Recently, a new combination of phenylephrine and ketorolac (Omidria®) has been approved by United States Food and Drug Administration for use during cataract surgery to maintain intraoperative mydriasis, prevent miosis, and reduce postoperative pain and inflammation. Clinical trials have shown that this new combination is effective, combining the positive effects of both drugs with a good safety profile and patient tolerability. Moreover, recent reports suggest that this combination is also effective in patients with high risk of poor pupil dilation. In conclusion, cataract is a global problem that significantly affects patients' quality of life. However, they can be managed with a safe and minimally invasive surgery. Advances in surgical techniques and newer pharmacological agents such as the combination of phenylephrine and ketorolac, together with better intraocular lenses, have greatly improved visual outcomes and thus patients' expectations regarding visual recovery are also increasing.
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Affiliation(s)
- Roberto Gonzalez-Salinas
- Department of Biomedical Research, Universidad Autónoma de Querétaro, Querétaro, Mexico
- Department of Research, Asociación para Evitar la Ceguera en México, Mexico City, Mexico
| | - Adriano Guarnieri
- Department of Ophthalmology, Clínica Universidad de Navarra, Pamplona, Spain
| | | | - Manuel Saenz-de-Viteri
- Department of Ophthalmology, Clínica Universidad de Navarra, Pamplona, Spain
- Correspondence: Manuel Saenz-de-Viteri, Ave Pio XII 36, 31008 Pamplona, Navarra, Spain, Tel +34 948 948 25 54 00, Fax +34 948 296 500, Email
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